The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 2009
Filed:
Dec. 11, 2006
Frank A. Nicholas, W. Henrietta, NY (US);
Michael R. Brosseau, Rochester, NY (US);
David A. Chinnici, Rochester, NY (US);
Frank A. Nicholas, W. Henrietta, NY (US);
Michael R. Brosseau, Rochester, NY (US);
David A. Chinnici, Rochester, NY (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
In a method for forming an injection molded manifold, the portion of the mold that forms a septum is modified to provide a substantially thicker septum, preferably about 8.5 mm or greater. In the molding operation, one or more removable slides are inserted through this region of the mold, each slide being preferably about 2.5 mm thick and about 30 mm wide. The septum is cast around the slides which are then withdrawn from the septum after the polymer composite is set, resulting in a septum that is substantially thicker than a prior art septum, comprising first and second plates, each about 3 mm thick, and a plurality of open core voids about 2.5 mm high and about 30 mm wide between the plates. The improved septum is stiffer than a single 4 mm thick prior art septum, has a higher natural frequency, and improves suppression of engine noise.